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Why doesn't light go faster than it does?

  1. Mar 10, 2008 #1
    If it has no mass, what stops it from going arbitrarily fast? Why doesn't it have infinite speed?
     
  2. jcsd
  3. Mar 10, 2008 #2
    Permittivity & permeability properties determine e.m. wave speed.
     
  4. Mar 10, 2008 #3
    Check out [post=1556816]this excellent post[/post] on the subject by rbj.
     
  5. Mar 10, 2008 #4

    nicksauce

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    Try writing down a wave equation where the speed of propagation is infinite :p
     
  6. Mar 14, 2008 #5
    light is a special case .no mater what speed of light cannot be more than what it is.its a relativity concept.
     
  7. Mar 15, 2008 #6
    Actually, it's not just light - as rbj points out in the post I linked to E&M, gravity, nuclear interactions, etc. all travel at the speed of light.
     
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